Two fifth of one fourth of three-seventh of a number is 15.What is the half of the number ?

A 57

B 175

C 157

D 350

Solution

Correct Answer: Option B

মনে করি ,সংখ্যাটি =x
প্রশ্নমতে , 2/5×1/4×3/7×x=15
বা, x=(15×5×4×7 )/2×3
        x=350
অতএব ,সংখ্যাটির অর্ধেক 350/2=175

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